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regulator: core: Add regulator_map_voltage_ascend() API

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A lot of regulator hardware has ascendant voltage list.
This patch adds regulator_map_voltage_ascend() and export it.

Drivers that have ascendant voltage list can use this as their map_voltage()
operation, this is more efficient than default regulator_map_voltage_iterate()
function.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Axel Lin
2013-04-18 10:34:49 +08:00
committed by Mark Brown
parent 41ef2d5678
commit fcf371ee56
2 changed files with 33 additions and 0 deletions
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2
include/linux/regulator/driver.h
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@@ -329,6 +329,8 @@ int regulator_map_voltage_linear(struct regulator_dev *rdev,
int min_uV, int max_uV);
int regulator_map_voltage_iterate(struct regulator_dev *rdev,
int min_uV, int max_uV);
int regulator_map_voltage_ascend(struct regulator_dev *rdev,
int min_uV, int max_uV);
int regulator_get_voltage_sel_regmap(struct regulator_dev *rdev);
int regulator_set_voltage_sel_regmap(struct regulator_dev *rdev, unsigned sel);
int regulator_is_enabled_regmap(struct regulator_dev *rdev);